Free Stats Discussion, No Skill Required Champion, and a focus on Master Yi
The discussion about free stats has been brought up by riot them self in the past. They really don't like it as it makes balance issues a problem or in another light, just not fun. So lets discuss No Skill Required Champion.
A no skill required champion is built into the game in order to help new players succeed at the game. It is like every game out there, however, usually No Skill Required champions are good but not godly. With the recent changes to Wiggles; aka FF self upgrade item for the jungle, Master Yi; a solid hyper ad carry jungler; is not balanced at all. Unlike most No Skill Required champions, Master Yi becomes a very powerful God like champion with items, usually just 3 items will push him over the top to almost too good, which many other champions can still be countered with just 3 items, Master Yi's kit enhances his main 3 items to a point of: This is not fun to face against.
So what is it about Master Yi that in short terms needs to be addressed; aka changed/nerf? Master Yi has free stats from his E (10% AD) forever. Not that bad as it doesn't scale very strong early game and to be equal to other champions, he needs about 400 AD to have the same amount roughly as Fiora gains from her W. His R gives a passive reset, usually just enough to reset his Q (Alpha Strike). This reset rework is what makes master yi a No Skill Required Champions and to be serious isn't a major issue as he can still be focused and die as he is an assassin type champion. His Q Gives Mini Crit damage. This actually helps him in the jungle and clear minion waves which isn't a bad thing, but may be too much vs champions as it really does boost his overall Damage upon 1 Alpha Strike mid to end game when he has 50% crit chance. Master Yi's R: Active; Gives Speed Boost, Gives Attack Speed, Gives Immunity to Slow.
I think out of all the things this champion gets, something has to go to keep him in check. I personally believe Master Yi needs the Singed treatment; aka a solid counter to his Active (R) ability.
For those who do not know or do not remember; Singed was nerfed a while back. It was the correct nerf and I stand here to say it was a way to put Singed back into the fray of top role champions. They removed Tenacity from his Active Ult as he too had many steroid buffs; ability power, armor, magic resistance, movement speed, health and mana regeneration per 5 seconds and Tenacity which stacked with Item Tenacity and Mastery Tenacity. Riots main point was that Singed was just too powerful with his ult as there was no real way to shut him down. So they took Tenacity away.
Back to Master Yi.
Master Yi is not a bruiser or a tank. He is a Hyper Carry AD Assassin base champion; meaning he can be shut down pretty easy with a decent focus. However, this doesn't mean he is balanced for idea of counter play.
Back to Master Yi's Ult (R) ability. I think taking away his immunity to slow effects is just what this champion needs. You don't want to take away the other two stats as they are exactly what Master Yi represents: High attack speed (AS) and high movement speed (MS).
TL/DR: Balance Master Yi with a Singed Nerf; take Master Yi's Immunity to slows with his ult activate and don't touch his damage.